Hughes v. Pron , 286 Pa. Super. 419 ( 1981 )
W. T. Grant Co. v. U.S.F. & G. Insurance , 279 Pa. Super. 591 ( 1980 )
westinghouse-electric-supply-company-a-division-of-westinghouse-electric , 560 F.2d 1109 ( 1977 )